2025-09-04 / UCAC4 373-185004 / (40481) 1999 RQ61
| # | OBS | Observer | Occ | Meth. | Instr. | CC |
TSRC | UT1 | UT2 | UT3 | UT4 | UT2E | UT3E | Dur. | Chrd |
|---|
| 1 |
show |
Tim Haymes |
O+ |
VID |
M280 |
GB |
GPS |
01:18:20 |
01:19:28.01 |
01:19:28.66 |
01:20:20 |
0.050 |
0.050 |
0.65 |
5.9 |
UT1/UT4: Begin/End of observation | UT2/UT3: Begin/End of occultation | Dur: Reported duration in seconds | Chrd: Corresponding chord length in km |
More
1 observation found in db: sodis
Available (probably) matching predictions (click on the link to switch):
| Map with groundtrack and observer stations |
|---|
| Event Details |
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Occultation UUID [and DB] : 60c59300-ddb7-11f0-547e-075e2dfde754 [observed]
Occultation Date + Time : 2025-09-04 at 01:25:56 UT +/- 0.01 min [1]
Object Designation : (40481) 1999 RQ61
Orbit Class : MBA
Star Designation : GDR3 6838534786542566656
Star Coordinates (ICRF) : RA = 21 41 07.1819, DE = -15 33 39.413 [2]
Star Magnitudes : G = 11.37 mag, RP = 11.01 mag, BP = 11.58 mag
Object Magnitude : V = 18.89 mag
Estimated Magnitude Drop : 7.5 mag
Estimated Max. Duration : 0.3 sec
Object Mean Diameter : 2.7 km (src: astorb)
Speed of the shadow : 9.1 km/s
Elongation to Moon & Sun : 27° (sunlit = 84%), Sun = 161°
Cross-track uncertainty : 1.7 mas = 1 km = 0.68 path-width (1-sig)
RUWE and duplicate source : 1.17 mas, dup.src = 0 (0:false, 1:true)
Ephemeris Reference : JPL#46
Note : FP:true
[1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0
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